Twelve months (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">twelve months</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for year that I've seen before include "Complete cycle of seasons" , "One tenth of a decade" , "eg 2004" , "See 33 Across" , "Orbital period" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">twelve months</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for calendar year that I've seen before include "period of months?" , "January 1 to December 31 inclusive" , "Twelve months" .)